Motor testing off-line and on-line are the most critical steps for optimization and performance.
Motor testing and energy efficiency are important to every plant. Motor testing off-line and on-line are the most critical steps for optimization and performance. Each test picks up on different parameters in the motor circuits. Off-line actually tests the whole motor circuit from starter to the motor; any changes over time due to motor deterioration or cable problems will be picked up doing this test. On-line testing under load is important to see how the motor performs electrically, showing a balanced system phase to phase is important. This also tests to see if the mechanical components are affecting the system adversely. Please join Geoff Generalovic, retired maintenance electrician from Canada's steel industry, as he explains the hows and whys of PdM and testing of a plant’s most critical asset — the power distribution system. Over the past few years, the common practice in industry is to evaluate system components for possible energy savings. Motors were upgraded to premium efficient designs and drives were added in many cases. Depending on the application, these changes often resulted in minimal energy savings.